var readline = require('readline-sync')
readline.setDefaultOptions({ prompt: '' })
var readline = readline.prompt
let str = readline()
function isEmpty (str) {
  if (str == '[]' || str == '{}' || str == '' || str == null || str == undefined || str == false || str == 0) {
    return true
  }
  return false
}
let res = isEmpty(str)
console.log(res)